"We had no knowledge on meta‐analyses and were somewhat confused by the number of programs available. Most of them were not easy to use, not insightful and required a priori knowledge of metaanalyses statistics. There was one exception: Comprehensive Meta‐analysis. We downloaded the software and went through the easy‐to‐use tutorial. Within an hour we were performing our own metaanalysis! Our analysis was verified by our statistical department with excellent results, giving us further confidence to continue our analysis and resulting in an excellent paper in the top journal on pain research: Niesters et al., Do Sex Differences Exist in Opioid Analgesia? A Systematic Review and Meta‐ Analysis of Human Experimental and Clinical Studies. Pain, 2010, in press, doi:10.1016/j.pain.2010.06.012."

Albert Dahan, MD, PhD & Marieke Niesters, MD, MSc - Department of Anesthesiology, Leiden University Medical Center, Leiden, The Netherlands

"CMA is very easy to use. That’s partly because of the manual and tutorial which take you through the analysis step by step. It’s also extremely versatile in terms of the type of input data it will accept (which is really valuable because with a meta‐analysis you have to take what data you can get). The output is comprehensive enough to permit you to interpret your effects, not merely report them."

Dr. Marie Blackmore - Research Coordinator, The Centre for Cerebral Palsy, Mount Lawley, WA, Australia